MAX13101E Datasheet, PDF (15/18 Pages) Maxim Integrated Products – 16-Channel Buffered CMOS Logic-Level Translators

16-Channel Buffered CMOS
Logic-Level Translators
R_C 1MΩ R_D 1500Ω
CHARGE-CURRENT- DISCHARGE
LIMIT RESISTOR RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
C_S
100pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
I_P 100%
90%
AMPERES
36.8%
10%
0
0 _tRL
I_r
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
TIME
t_DL
CURRENT WAVEFORM
Figure 8a. Human Body ESD Test Model
Figure 8b. Human Body Model Current Waveform
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.
Human Body Model
Figure 8a shows the Human Body Model and Figure 8b
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est, which is then discharged into the test device
through a 1.5kΩ resistor.
Machine Model
The Machine Model for ESD tests all pins using a
200pF storage capacitor and zero discharge resis-
tance. Its objective is to emulate the stress caused by
contact that occurs with handling and assembly during
manufacturing. All pins require this protection during
manufacturing, not just inputs and outputs. Therefore,
after PC board assembly, the Machine Model is less
relevant to I/O ports.
Applications Information
Power-Supply Decoupling
To reduce ripple and the chance of transmitting incor-
rect data, bypass V_L and V_CC to ground with 0.1µF
capacitors. To ensure full ±15kV ESD protection,
bypass V_CC to ground with a 1µF ceramic capacitor.
Place all capacitors as close to the power-supply inputs
as possible.
Capacitive Loading
Capacitive loading on the I/O lines impacts the rise time
(and fall time) of the MAX13101E/MAX13102E/
MAX13103E/MAX13108E when driving the signal lines.
The actual rise time is a function of the parasitic capaci-
tance, the supply voltage, and the drive impedance of
the MAX13101E/MAX13102E/MAX13103E/MAX13108E.
For proper operation, the signal must reach the V_OH as
required before the rise-time accelerators turn off.
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